You can have an investigate build with investigate tribal, filling the deck with cards that investigate and cards like Eloise, Nephalia Sleuth and Wernog, Rider's Chaplain
Enchantment Color tag templates(None) Golgari Germination Whenever a nontoken creature you control dies, create a 1/1 green Saproling creature token
Assign Black Vise to the player most likely to be drawing cards and you'll have a good chance of getting a Valgavoth trigger on their turn
If you don't believe me, then sit across from an Animar player as they use Animar to cast every Eldrazi you've heard of and then some
There are plenty of powerful cards to play without multiple mana symbols, and its powerful with commanders that cost or have a cost of like Niv-Mizzet Reborn or Jodah, Archmage Eternal
It gets even more useful in post-board games as your opponents often board out most, if not all, of their creature removal against the creatureless deck